<ion-content>
  <ion-button id="dismiss" (click)="modal.dismiss()">Dismiss Modal</ion-button>
  <ion-accordion-group [value]="'a'">
    <ion-accordion value="a">
      <ion-item slot="header">
        <ion-label>A</ion-label>
      </ion-item>
      <div slot="content">A content</div>
    </ion-accordion>
    <ion-accordion value="b">
      <ion-item slot="header">
        <ion-label>B</ion-label>
      </ion-item>
      <div slot="content">B content</div>
    </ion-accordion>
  </ion-accordion-group>
</ion-content>
